Ratchet-wrench.



C.l R.l ANDERSON. BATGHET WRENCH.`

APPLzcATIoH FILED Dnc. s, 190e.

Patented ay' 31, 1910.

1 ,A Ll @onra Wober Anderem.

il 'ii tileran srarns onirica.

CONRAD ROBERT ANDERSON, OF WEST DULUTI-I, MINNESOTA.

RATCHET-VRENCB.

To all whom it may concern:

Be it known that l, CONRAD ROBERT ANDER- soN, a citizen of the UnitedStates, residing at Test Duluth, in the county of St. Louis, States ofMinnesota, have invented certain new and useful improvements inRatchetlVrenches; and 1 do hereby declare the following' to be a full,clear, and eXact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to ratchet wrenches.

The object of the invention is the production of a ratchet wrench whichis simple and cheap in construction and highly efcient in use, and tothis end the invention consists in the combination and arrangement ofparts to be hereinafter more fully set forth and described.

In describing the invention in detail reference will be had to theaccompanying drawings in which like characters of reference denotecorresponding parts in the several views, and in which,

Figure 1 is a top elevation of a ratchet wrench constructed inaccordance with the invention; Fig. 2, an edge view of same, Fig. 3, asectional View of the ratchet wheel of the wrench; Fig. 4, a detailperspective view of the work-engaging socket adapted to be engaged bythe ratchet wheel; Fig. 5, a longitudinal section of the work engagingsocket; and Fig. G, a modified form of the work engaging socket; andFig. 7, a detail view showing a modified form of construction of thehandle of the wrench with t-he spaced arms between which the ratchetwheel is mounted formed integral with said handle.

Referring to the drawings, the wrench is shown as comprising a stock 10having a handle 11 provided at one end, and a pair of parallel spacedarms 12 and 13 projecting from the other' end. Journaled between thearms 12 and 13 is a ratchet wheel 1-1 provided centrally with a squaredbore 15 which has provided in its wall a continuous groove 16 for apurpose to be presently described.

Pivoted between the projecting arms 12 and 13 are the oppositelydisposed pawls 17 and 18, the inner ends of which are adapted to benormally forced outwardly by the spring 19 disposed between the ends ofsaid pawls and between the arms 12 and 13.

Speccation of Letters Eatent.

Application filed December 9, 1909.

Patented May 31, 1910.

Serial No. 532,232.

Mounted on the stock 10, for a rotative movement, adjacent the innerends of the pawls 17 and 18 is a sleeve 20 which is provided with alaterally extending lug 21 adapted to alternately engage the inner endsof the pawls 17 and 18 said sleeve is rotated, whereby the outer end ofeit-her pawl may be held out of engagement with the teeth of the ratchetwheel.

Betachably mounted in the squared bore 15, of the ratchet wheel, is awork engaging socket 21 also provided with a squared bore 22 and withdiametrically opposite, corresponding' longitudinal grooves 23 and 21.Mounted in the groove 23 and projecting beyond one end of the socket isa leaf spring provided with a laterally projecting lug 2G, while acorresponding leaf spring 27, provided with a laterally projecting lug28 mounted in the groove 241. rfhe lugs 26 and 28 are so disposed thatwhen the socket 21 is inserted in the bore 15 said lugs will enter thegroove 1G under the influence of the expansive force of the leaf springs25 and 27 and thus lock the socket on the ratchet wheel. 1n order todetach the socket it will only be necessary to grip the projecting endsof the springs 25 and 27 with the lingers and press same toward eachother so as to draw the lugsV 2G and 28 out of the groove 1G when thesocket can easily be withdrawn from the ratchet wheel.

If desired the handle of the wrench may be constructed of twolongitudinal sections 30 and 31 which have their corresponding endsreduced at adjacent faces to form the parallel spaced arms 32 and 33between which may be mounted the ratchet wheel of the wrench and othernecessary elements. This form of handle is clearly illustrated in Fig.7.

vVhat is claimed isz- A ratchet wrench comprising a stock, spaced armsextending from one ond of said stock, a ratchet wheel journaled betweensaid arms having a transverse bore therethrough the wall of which isprovided with a continuous groove extending transversely of said bore, awork engaging socket adapted to be detachably inserted in t-he bore ofthe ratchet wheel and comprising a tubular member correspon ding incross section to the bore of the ratchet wheel and having oppositelydisposed longitudinal grooves in the outer face thereof, a normallyexpanded respect to the stock when said stock is oscilleaf springmounted in each of said grooves lated n one direction. 10 projectingbeyond one end of said member, a In testimony whereof, I ax my signalugin each of said springs adapted to enter ture, in presence of twoWitnesses.

5 the groove in the Wall of the bore in the CONRAD ROBERT ANDERSON.

ratchet Wheel When said socket is inserted lVitnesses: therein and meansfor locking said ratchet JOHN J. ROWE,

Wheel against independent rotation With JOHN NoRsE.

